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Size- and Interface-Constrained Tensile Behavior of Ti/Ni Polycrystalline Nanolaminates: Insight from Molecular Dynamics [PDF]
NanomaterialsMetallic nanolaminates (MNLs) exhibit excellent mechanical properties due to unique modulation and interface structures. However, the correlation between the deformation of nanostructures and the mechanical behavior of the materials remains inadequately ...
Mengjia Su +3 more
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Metals, 2021 In this study, an overview of microstructure features such as grain size, grain structure, texture and its impact on strain rate sensitivity, strain hardening index, activation energy and thermal stability for achieving superplasticity of Mg alloys are ...
Abdul Malik +3 more
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A Short Review on Superplasticity of Aluminum Alloys
Engineering Proceedings, 2023 Superplastic aluminum (Al) alloys can be used in the forming processes to fabricate complex geometry components for a wide range of applications in the automobile industry, where light weight and high stiffness are needed.
Eric Kojo Kweitsu +2 more
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Statistical Crystal Plasticity Model Advanced for Grain Boundary Sliding Description
Crystals, 2020 Grain boundary sliding is an important deformation mechanism, and therefore its description is essential for modeling different technological processes of thermomechanical treatment, in particular the superplasticity forming of metallic materials.
Alexey Shveykin +2 more
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The Effects of Grain Boundary Structures on Mechanical Properties in Nanocrystalline Al Alloy [PDF]
Archives of Metallurgy and Materials, 2021 This study investigates the effects of grain boundary structures on mechanical properties of nanocrystalline Al-0.7Mg-1.0Cu alloy using nanoindentation system.
Jin Man Jang, Wonsik Lee, Se-Hyun Ko
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Metals, 2022 This paper investigates the deformation behavior of a gradient grained FeNi sample under uniaxial tension using molecular dynamics simulations. The simulated sample consists of five layers with grains of the same size in each layer ranging from 10 to 30 ...
Aleksandr V. Korchuganov +2 more
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The role of grain size evolution in the rheology of ice: implications for reconciling laboratory creep data and the Glen flow law [PDF]
The Cryosphere, 2021 Viscous flow in ice is often described by the Glen flow law – a non-Newtonian, power-law relationship between stress and strain rate with a stress exponent n ∼ 3. The Glen law is attributed to grain-size-insensitive dislocation creep; however, laboratory
M. D. Behn, D. L. Goldsby, G. Hirth
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Hierarchical creep cavity formation in an ultramylonite and implications for phase mixing [PDF]
Solid Earth, 2017 Establishing models for the formation of well-mixed polyphase domains in ultramylonites is difficult because the effects of large strains and thermo-hydro-chemo-mechanical feedbacks can obscure the transient phenomena that may be responsible for ...
J. Gilgannon +5 more
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Shock-induced sliding of (0 0 1) twist grain boundaries in Cu
Results in Physics, 2022 Using molecular dynamics simulations, we investigate shock-induced sliding of a set of (0 0 1) twist grain boundaries (GBs) in Cu bicrystal, with shock direction parallel to GB and low shock strength.
Xiaojiang Long +4 more
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Materials Research Letters, 2021 Ultrafine-grained and nanocrystalline materials frequently show an enhanced rate sensitivity of their mechanical behavior, which is generally assumed to be the consequence of interface sliding or thermally activated dislocation processes at the ...
Patrick Feldner +2 more
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